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| author | Furquan Shaikh <furquan@chromium.org> | 2017-06-11 17:04:49 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-06-15 17:27:53 -0700 |
| commit | 98b58b5b692a188a54fd06819a5c749655855556 (patch) | |
| tree | 7f56a06f222d7bbafdf47d98067d5be4fc956612 /core | |
| parent | 7e59da99a2e76c1094b8bce675fb42ca384e7988 (diff) | |
| download | chrome-ec-98b58b5b692a188a54fd06819a5c749655855556.tar.gz | |
chip/npcx: Add support for saving/restoring panic data
For some platforms like poppy/eve where a PMIC reset is required on
reboot/panic to ensure a complete power-cycle of the AP, there is a
drop on VCC power rail thus resulting in a loss of panic data. For
such cases, provide API to backup panic data in BBRAM before
performing a PMIC reset. Additionally, check for panic data in
system_pre_init and restore if available from BBRAM.
BUG=b:62076222
BRANCH=None
TEST=make -j buildall
1. > crash divzero
> panic
=== PROCESS EXCEPTION: 06 ====== xPSR: ffffffff ===
r0 : r1 : r2 : r3 :
r4 :00000001 r5 :00000000 r6 :00000000 r7 :00000000
r8 :00000000 r9 :00000000 r10:00000000 r11:00000000
r12: sp :00000000 lr : pc :
Divide by 0
mmfs = 2000000, shcsr = 0, hfsr = 0, dfsr = 0
2. > crash assert
> panic
=== PROCESS EXCEPTION: 00 ====== xPSR: ffffffff ===
r0 : r1 : r2 : r3 :
r4 :dead6663 r5 :000000a4 r6 :00000000 r7 :00000000
r8 :00000000 r9 :00000000 r10:00000000 r11:00000000
r12: sp :00000000 lr : pc :
mmfs = 0, shcsr = 0, hfsr = 0, dfsr = 0
3. > crash watchdog
> panic
=== PROCESS EXCEPTION: 3c ====== xPSR: ffffffff ===
r0 : r1 : r2 : r3 :
r4 :dead6664 r5 :0000000a r6 :00000000 r7 :00000000
r8 :00000000 r9 :00000000 r10:00000000 r11:00000000
r12: sp :00000000 lr : pc :
mmfs = 0, shcsr = 0, hfsr = 0, dfsr = 0
4. > crash unaligned
> panic
=== PROCESS EXCEPTION: 06 ====== xPSR: ffffffff ===
r0 : r1 : r2 : r3 :
r4 :200c0d9e r5 :00000000 r6 :00000000 r7 :00000000
r8 :00000000 r9 :00000000 r10:00000000 r11:00000000
r12: sp :00000000 lr : pc :
Unaligned
mmfs = 1000000, shcsr = 0, hfsr = 0, dfsr = 0
Change-Id: I95cdd55e260487903e089653a47d3995d177daed
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/530136
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'core')
0 files changed, 0 insertions, 0 deletions